tc94a14fb TOSHIBA Semiconductor CORPORATION, tc94a14fb Datasheet - Page 4

• Manufacturer Part Number: tc94a14fb
• Description: Digital Servo Single-chip Processor For Use In Cd Player -
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Pin No.
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
Symbol
AV
DV
TESIN
XV
XV
DV
DV
RFGC
RFCT
RFRP
SBAD
TEBC
V
DMO
V
V
RFZI
TEZI
FOO
FMO
TRO
DVR
SEL
FEI
TEI
RO
XO
LO
REF
DD3
SS3
XI
DD3
DD3
SS3
SS3
DD3
SS3
AI/F
AI/F
AI/F
AI/F
AI/F
AI/F
AI/F
AI/F
AI/F
AI/F
AI/F
AI/F
AI/F
AI/F
AI/F
AI/F
AI/F
AI/F
3I/F
I/O
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
O
O
O
O
O
O
O
O
O
O
I
I
I
I
I
I
I
I
I
RFRP signal center level input pin.
RFRP signal zero-cross input pin.
RF ripple signal input pin.
Focus error signal input pin.
Sub-beam adder signal input pin.
Tracking error input pin. Inputs when tracking servo is on.
Tracking error signal zero-cross input pin.
Focus equalizer output pin.
Tracking equalizer output pin.
Analog reference power supply voltage pin.
RF amplitude adjustment control signal output pin.
Tracking balance control signal output pin.
APC circuit ON/OFF signal output pin. At laser on, high
impedance with UHS = “L”, H output with UHS = “H”.
Analog 3.3 V power supply voltage pin.
Feed equalizer output pin.
Disc equalizer output pin.
Digital GND pin.
Digital 3.3 V power supply voltage pin.
Test input pin. Normally, fixed to “L”.
System clock oscillator GND pin.
System clock oscillator input pin.
System clock oscillator output pin.
System clock oscillator 3.3 V power supply voltage pin.
DA converter GND pin.
R-channel data forward output pin.
DA converter 3.3 V power supply pin.
Reference voltage pin.
L-channel data forward output pin.
DA converter GND pin.
Function Description
4
Analog input: Zin = 33 kW
Analog input
Analog input
Analog input
Analog input
Analog input
Analog input: Zin = 10 kW
Analog output
(AV
3-state output
(PWM carrier = 88.2 kHz)
(AV
3-state output
3-state output
(PWM carrier = 88.2 kHz)
(AV
TC94A14F/FA/FB
SS3
DD3
DD3
~AV
, V
, V
Remarks
REF
REF
DD3
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
, AV
, AV
2002-11-18
)
SS3
SS3
)
)